Vehicle tracking systems and methods
First Claim
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1. A vehicle tracking system comprising:
- a Global Positioning System (GPS) receiver operative to generate first, GPS, data identifying the vehicle'"'"'s current position from GPS signals;
an On Board Diagnostics (OBD) Hardware Interface operative to generate second, OBD, data identifying the vehicle'"'"'s current position by using dead reckoning techniques; and
arbitration means to arbitrate between the first and second data by performing integrity checks thereon to generate data giving an improved identification of the vehicle'"'"'s current position.
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Abstract
Vehicle tracking systems and methods are provided. A Global Positioning System (GPS) receiver is operative to generate first, GPS, data identifying the vehicle'"'"'s current position from GPS signals. An On Board Diagnostics (OBD) Hardware Interface is operative to generate second, OBD, data identifying the vehicle'"'"'s current position by using dead reckoning techniques. Arbitration means are provided to arbitrate between the first and second data by performing integrity checks thereon to generate data giving an improved identification of the vehicle'"'"'s current position.
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Citations
21 Claims
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1. A vehicle tracking system comprising:
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a Global Positioning System (GPS) receiver operative to generate first, GPS, data identifying the vehicle'"'"'s current position from GPS signals;
an On Board Diagnostics (OBD) Hardware Interface operative to generate second, OBD, data identifying the vehicle'"'"'s current position by using dead reckoning techniques; and
arbitration means to arbitrate between the first and second data by performing integrity checks thereon to generate data giving an improved identification of the vehicle'"'"'s current position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of vehicle tracking comprising:
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using a Global Positioning System (GPS) receiver to generate first, GPS, data identifying the vehicle'"'"'s current position from GPS signals;
using an On Board Diagnostics (OBD) Hardware Interface to generate second, OBD, data identifying the vehicle'"'"'s current position by using dead reckoning techniques; and
using arbitration means to arbitrate between the first and second data by performing integrity checks thereon to generate data giving an improved identification of the vehicle'"'"'s current position.
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19. A vehicle computation system comprising an OBD hardware Interface to receive signals produced by the controls of the vehicle, and computation means for performing computations based on data supplied by the OBD Hardware Interface, wherein a control means of the vehicle is used to enable the user to provide a signal input to the computation means via the OBD Hardware interface, the signal representing data of different significance from the normal function of the control means in controlling the vehicle.
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20. An expense form generation system comprising:
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a Global Positioning System (GPS) receiver operative to generate first, GPS, data identifying the vehicle'"'"'s current position; and
computation means for generating an expense form based on data from the Global Positioning System receiver.
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21. An expense form generation system comprising:
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an On Board Diagnostics (OBD) Hardware Interface operative to generate second, OBD, data identifying the vehicle'"'"'s current position by using dead reckoning techniques; and
computation means for generating an expense form based on data from the Global Positioning System receiver.
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Specification